The startle reflex occurs when unexpected sounds reach the:
A) thalamus. B) hypothalamus. C) midbrain. D) pons.
Answer: C
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Changes in the external and internal environment can produce ________ that are detected by the sensory system.
A. stimuli B. sensations C. adaptations D. receptors E. transducers
A weight-lifter strains to lift a heavy weight and there is no movement of the person's arms holding on to the weight. This type of contraction is called a(n) ________ contraction
A) isometric B) tetanus C) isotonic D) treppe E) concentric
Autonomic _________ are collections of sympathetic postganglionic axons and parasympathetic preganglionic axons, as well as some visceral sensory axons
Fill in the blank with correct word.
The "buffy coat" in a centrifuged blood sample is composed of
A. erythrocytes and leukocytes. B. platelets. C. leukocytes. D. platelets and leukocytes. E. erythrocytes.